exam Maths Puzzle Numerical Ability

How many pints of a 9% cleaning solution must be mixed with 10 pints of a 13%
cleaning solution to give a 11% solution?

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exam Other Question

What function represents the data in the following tables?
a) x-0,1,2,3
y-24,12,6,3
b) x-0,3,6,9
y-5,10,20,40 If your car gets 21.6 miles per gallon, how many gallons of gas do you need to travel 324 miles?